I have read some of the other posts on spark plugs, my question is can you use an NGK CR8EIX on a 660, or is it just for the 700? OR, is the NGK DPR8EA-9 the way to go for a 660?
Thanks MD. I'll post a pic of my service manual sometime. It was given to me with the bike and it looked like he soaked it in water for a week.0.8-0.9mm or .031-.035"
Page 2-2 of your OEM Service Manual :thumbsup:
I didn't find the iridium plugs worth the extra cost. You don't want to gap the iridium plug either, too good of a chance of breaking the electrode. Should be pre-gapped for both the regular and iridium, but it doesn't hurt to check the standard plug.